1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License.  See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
7  */
8 #ifndef _ASM_IA64_SN_NODEPDA_H
9 #define _ASM_IA64_SN_NODEPDA_H
10 
11 
12 #include <linux/config.h>
13 #include <asm/sn/sgi.h>
14 #include <asm/irq.h>
15 #include <asm/sn/intr.h>
16 #include <asm/sn/router.h>
17 #include <asm/sn/pda.h>
18 #include <asm/sn/module.h>
19 #include <asm/sn/bte.h>
20 
21 /*
22  * NUMA Node-Specific Data structures are defined in this file.
23  * In particular, this is the location of the node PDA.
24  * A pointer to the right node PDA is saved in each CPU PDA.
25  */
26 
27 /*
28  * Node-specific data structure.
29  *
30  * One of these structures is allocated on each node of a NUMA system.
31  *
32  * This structure provides a convenient way of keeping together
33  * all per-node data structures.
34  */
35 
36 
37 
38 struct nodepda_s {
39 
40 
41 	cpuid_t         node_first_cpu; /* Starting cpu number for node */
42 					/* WARNING: no guarantee that   */
43 					/*  the second cpu on a node is */
44 					/*  node_first_cpu+1.           */
45 
46 	vertex_hdl_t 	xbow_vhdl;
47 	nasid_t		xbow_peer;	/* NASID of our peer hub on xbow */
48 	struct semaphore xbow_sema;	/* Sema for xbow synchronization */
49 	slotid_t	slotdesc;
50 	geoid_t		geoid;
51 	module_t	*module;	/* Pointer to containing module */
52 	xwidgetnum_t 	basew_id;
53 	vertex_hdl_t 	basew_xc;
54 	int		hubticks;
55 	int		num_routers;	/* XXX not setup! Total routers in the system */
56 
57 
58 	char		*hwg_node_name;	/* hwgraph node name */
59 	vertex_hdl_t	node_vertex;	/* Hwgraph vertex for this node */
60 
61 	void 		*pdinfo;	/* Platform-dependent per-node info */
62 
63 
64 	nodepda_router_info_t	*npda_rip_first;
65 	nodepda_router_info_t	**npda_rip_last;
66 
67 
68 	spinlock_t		bist_lock;
69 
70 	/*
71 	 * The BTEs on this node are shared by the local cpus
72 	 */
73 	struct bteinfo_s	bte_if[BTES_PER_NODE];	/* Virtual Interface */
74 	struct timer_list	bte_recovery_timer;
75 	spinlock_t		bte_recovery_lock;
76 
77 	/*
78 	 * Array of pointers to the nodepdas for each node.
79 	 */
80 	struct nodepda_s	*pernode_pdaindr[MAX_COMPACT_NODES];
81 
82 };
83 
84 typedef struct nodepda_s nodepda_t;
85 
86 struct irqpda_s {
87 	int num_irq_used;
88 	char irq_flags[NR_IRQS];
89 	struct pci_dev *device_dev[NR_IRQS];
90 	char share_count[NR_IRQS];
91 	struct pci_dev *current;
92 };
93 
94 typedef struct irqpda_s irqpda_t;
95 
96 
97 /*
98  * Access Functions for node PDA.
99  * Since there is one nodepda for each node, we need a convenient mechanism
100  * to access these nodepdas without cluttering code with #ifdefs.
101  * The next set of definitions provides this.
102  * Routines are expected to use
103  *
104  *	nodepda			-> to access node PDA for the node on which code is running
105  *	subnodepda		-> to access subnode PDA for the subnode on which code is running
106  *
107  *	NODEPDA(cnode)		-> to access node PDA for cnodeid
108  *	SUBNODEPDA(cnode,sn)	-> to access subnode PDA for cnodeid/subnode
109  */
110 
111 #define	nodepda		pda.p_nodepda		/* Ptr to this node's PDA */
112 #define	NODEPDA(cnode)		(nodepda->pernode_pdaindr[cnode])
113 
114 
115 /*
116  * Macros to access data structures inside nodepda
117  */
118 #define NODE_MODULEID(cnode)    geo_module((NODEPDA(cnode)->geoid))
119 #define NODE_SLOTID(cnode)	(NODEPDA(cnode)->slotdesc)
120 
121 
122 /*
123  * Quickly convert a compact node ID into a hwgraph vertex
124  */
125 #define cnodeid_to_vertex(cnodeid) (NODEPDA(cnodeid)->node_vertex)
126 
127 
128 /*
129  * Check if given a compact node id the corresponding node has all the
130  * cpus disabled.
131  */
132 #define is_headless_node(cnode)	(!test_bit(cnode, &node_has_active_cpus))
133 
134 /*
135  * Check if given a node vertex handle the corresponding node has all the
136  * cpus disabled.
137  */
138 #define is_headless_node_vertex(_nodevhdl) \
139 			is_headless_node(nodevertex_to_cnodeid(_nodevhdl))
140 
141 
142 #endif /* _ASM_IA64_SN_NODEPDA_H */
143